Spray foam roofing is also known as Spray Polyurethane Foam or SPF. It is dispensed like a liquid and later swells to a foam consistency. The results of the spray are a full layer that extends across and covers a rooftop. Spray foam roofing is a great eco-friendly product as you can use it on the interior and exterior of almost any industrial, commercial, manufacturing, or residential structure.
This type of foam roofing material has been in existence since the early 60s. Though it is not as well known and publicized as much as other roofing system products, it has been used in residential, commercial and, industrial buildings. It is adaptable to and can be used in any climate, and when it is installed and maintained correctly, it can last for 50 years plus.
Spray Foam Roofing Costs
A commercial roof that is more than 20,000 square feet will incur consumer expenses of around $4.00-$7.00 in square feet, which also includes a total for materials, labor, and installation costs. That price range is for a spray foam roof and a building that is of normal to average size.
Spray foam roofing factors that will affect overall costs include:
- Roof size
- Roof condition
- Roof access
- Spray foam thickness
- Silicone Coating
- Warranty type
- Roof Maintenance
Spray Foam Roofing Installation
Preparation is always the key when it comes to installation. Before any spray foam installation, you need to prepare the substrate (underlayer) or the original roof area. Instead of completely dislodging the existing roof, a roofing contractor will ready the original space by ridding it of any debris, dust, dirt, and toxins. You can complete this process with simple sweeping, vacuuming, or air pressure release from a blower.
With spray foam roofing installation, the first layer to be placed is the polyurethane foam. The foam is readied by mixing two different liquids. One is a polyol/resin, and the other an isocyanate (organic compound). This combination is sprayed onto the clean and prepared roof substrate.
After the area is sprayed, the liquid expands to a foam that increases 20 times in size. It forms a solid and seamless surface. When the foam has completely expanded, the layer formed is approximately one to one and a half inches in thickness. This type of foam bonds to the surface and can be installed on almost any type of roof slope.
After the foam layer has set, it’s then coated with different layers of silicone or an acrylic coating that contains embedded granules. This particular layer has a thickness in mils (between 20-30). This coating is protective towards possible fire, weather conditions, ultraviolet light, and everyday wear.
Once the coating and installation process is complete, the reveal presents a finished area that is durable, resistant to moisture, and seamless.
Spray Foam Roofing Benefits
There are any number of benefits with a spray foam roofing system. The advantages are many regarding energy efficiency, streamlined installation, product endurance, and overall performance.
With SPF roofing, the polyurethane foam resists the heat in warmer weather and keeps it in during cold snaps, which means all-around lower utility bills. The silicone coating on the top of the foam is resistant to ultraviolet (UV) light, while it protects the foam and minimizes heat absorption. In addition, SPF roofing provides a moisture barrier that has a high R-value. That means improved air filtration and insulating ability.
Installation for an SPF roof is a time and money saver. The application process with the foam and coating is streamlined. It is applied with almost no limitations or interruptions of any ongoing activity in a structure or facility.
The installation involves a few easy to follow steps that include spraying the liquid on a clean and debris free roof and allowing the liquid to swell into a foam. The foam can adapt to any type of roof and roof shape, plus it can be applied over wood, metal, asphalt, and shingles.
There is minimal maintenance with spray foam roofing. With the right care, an SPF roof can last 50 years or more; however, it should be inspected at least twice a year, once in the spring and a second time in the fall. It is always a good idea to perform periodic inspections to check for weather-related or other damages. Also, if silicone recoating is necessary, there is no need to tear-off or remove any current material. A new coat of silicone is simply placed over the top of the existing roofing.
Waterproofing and Seaming
Spray foam roofing removes the worry over leaks and possible breaks or tears in seaming. With spray foam roofing applied in a liquid form, it is easier to fill in and smooth out seams, crack, and gaps in the roof substrate. The smoothing out process also allows for a level roof area, which eliminates the chance of water pooling and causing leaks. Also, the foam material can expand and contract with differing temperatures, which lessens the chance of splitting, cracks, tears, and other issues.
Environmentally Sound, Sustainable and Renewable
A spray foam roof contains environmentally friendly materials, and there is minimal waste with an SPF roof. Little to no original roof stripping is involved, as well. The spray foam is affixed on top, which stops the need to tear off a roof and expend valuable time, materials, and costs. A roof can be renewed with little to no waste or output.
SPM materials are environmentally sound and are free from:
- Chlorofluorocarbons – CFCs
- Potential of Ozone depletion (ODP)
- Emission of VOCs or Volatile Organic Compounds
- Limited to low GWP Global Warming Potential
Other Spray Foam Uses
Spray foam is not just for roofing. It has other uses that include:
- Insulation for both residential and commercial facilities and structures – It can be used in both ceilings and walls. It is applied or installed in almost the same way as roofing spray foam.
- Insulation for ductwork – Spray foam easily adheres to ductwork surfaces and improves heat and air equipment effectiveness as well as reduces air leaks and maintains temperatures within and outside of ductwork.
- Roof Tie-Ins – Spray foam can also be useful for roof tie-ins or where two different types of roofing materials meet or intersect. These can be areas where drainage and other forms of moisture accumulate. With the use of a spray foam application, a layer of protection is created to stop any moisture from getting to the underside of a roof or its flashing.
Spray foam roofing has become an all-around roofing product for use in almost any commercial, industrial, or residential structure. Its enduring quality and cost efficiency have paved the way for businesses and consumers to discover the most effective solutions for their roofing needs. Should you require more information about spray foam roofing, or simply have questions about the system, complete the online contact form. A representative will get back to you with the answers you need to make an informed decision.